Lubricator



Feb. 8,1927. 1,617,199

' W. G. COLES LUBRICAT'OR l Filed Amil 14. 1924 Patented Feb. 8, 1927.

` reime-e- `NET.FE1@ STTES P'ENT @WM5 'WILFRED GEORGE CODES, or MADISON, WISCONSIN, as SIeNOR To MADISON Kiri? CORPORATION, or MADISON, WISCONSIN, A CORPORATION yor WISCONSIN.

LUBRICATOR.

Y Application filed April 14, 1924. Serial No. 796,589.

rlhis invention pertains to force feed lubricators and more particularly to that'type wherein a reciprocating pump element, havingan Oscillating movement about its axis, is einployed't'o draw ina charge of OilI` and l thenr vforce such indrawn charge to' the p art to Ybe` lubricated, 'the pump element being oscillated to bring the intake and discharge portsv or passages formed therein into registry, successively, with the intakennd disl charge ports formed in the cylinder or casting. Y

Heretofoie lubricators of this type have had the ports or passages in the piston in the shape of grooves formedexteriorly thereof, andwhile such devices have given general satisfaction in actual "practice,'it"has been found that where' the ylubri'cat'or" is working against high pressure theV oil is apt to be forced back through ythe 'grooves and around the piston ,thus minimizing the eectiveness of the apparatus 'atsu'ch' time as its full effective capacity is needed.

Such a structure is set fforth in Letters Patent No. 1,262,979 to Putnam, dated April 16, 1918, and as will be seen upon reference tol said patent and more particularly' to Figs. 5 and 6 there is a relatively small lap between the grooves and 31 and -their 30 respective intake and discharge portsv and 33. i

In actual practice it'has been found tiz'i'at to produce a lap lof suitable dimensions it is necessary to increase the diameter of the plunger and thei'cylinder, thereby increasing the amount o f oil pumped by the unit beyond a desirable quantity.

In other words, vthe lap can be increased indefinitely vbut the larger the diameter of the plunger, with any given plunger Stroke, the greater the ainount'of oil the pumping unit will pump, and therefore,'the less desirable becomes thevdesign. urthermore, the use of external grooves on the plunger oi piston is done away withand simple crossdrillings Iare employed, a point of material advantage. Y

This invention is illustrated in the annexed drawings, wherein:

50 Fig. 1 is a vertical sectional view Aof a lubricator unit, the parts vbeing' shown in position at the completion of ythe suction stroke; i'

Fig. 2 is a horizontal sectional view ou 5 the line II-Il vof Fig. 1;

Fig. 'is a sectional'view illustrating the position of the reciprocating' "cylinder at midway ofits rotation between' the intake and discharge ports; a

Fig. 6 is a detail perspective view, partly broken awayfofthe cylinder; and A Fig. 7 vis a perspective vview o f the lined piston or displacement 4m'en'iber'which'coperates with the reciprocating cylinder. h

Referring first to Figs. 1 to 7 1 denotes a portion of a reservoir or casing adapted to hold theoil ',supply, to the side wall Yof which, adjacent the lower portion, is 7lined a casting denoted generally by 2Q Said .casting is providedivith a bore or opening 3, which extends therethrough, the lower end whereof is threaded While vthe upper major part is given a tr'ue smooth finish.

A cylinder 4 is mounted L,for reciprocation and oscillation within the bore, such compound movement being elfected through a wabbling eccentric secured upon a driven shaft 6, and a yoke 7,liaving a gimbaljoint connection Iwith the upper end of the piston. Such means of effecting movement of 4the piston is disclosed'in the patent aforesaid, and in Patent No. 1,066,123,8,to which refercnc-e is also made.

Cyliiideirl is provided lwith an axial bore or chamber 8,`eXtending inwardly from its lower end and with two lateral vbores or ports 9 and 10, which terminate at their inner endsin the upper portion of bore 8.

Port 9, which may be designated the intake port, is designed to be broughtinto registry during the intake or suction stroke with an intake or feed passage 1l, while port 10 is designed to register with a discharge port or passage l2 during the forcing or displaceinentstroke of Athe cylinder, said 4latter port being in communication'with a pipe 13 which leads to the part to be lubricated.

Secured within the lower threaded p ortion yof the `cylindrical bore 8,;is a plug let :to which is secured by la screw plug 15,` a

vfixed 'stein orpiston 16, the latter being roff such size. las `to make a clos-e sliding Lfit with ,thebore 8 in the lower portion ofgthe cylinder. Said piston 16 iSf'Of Such height that ,it extends up near to but clOeS ',IlQt `close up,

completion of the portsV 9 and 10 when the cylinder 4- is in its lowermost position, Vas illustrated in Fig. 3 and in effect forms an abutment against or upon which the indrawn oil rests prior to its being forced outwardly.

A relief port 17 is provided inthe casting` 2, below the lower end of cylinder e, so as to prevent oil from being tapped below'the cylinder. p

In operation, motion being impart-edito shaft 6 causes, say first anupward movement of cylinder e, the port 9 being at such time in registry with port 1l and port l0, see Fig. 2, out of alinement with port 12. Upward movement of the cylinder causes oil to be drawn in through ports l1 and 9 and into the interior of the cylinder above theiixed piston 16. Further rotation of the shaft causes the eccentric tomove the cylinder about its axis, thus moving the ports 9 and l1 out of register, see Fig. 5, at which time it will be noted that there is main-V tained the maximum of lap which prevents the back pressure from forcing the oil bacl-V ward from the interior of the cylinder through port 9, around the cylinder and out of port 11. A continued counter-clockwise rotative movement of the cylinder brings the ports into registry as in Fig. 3 and Fig. a, at which time rotative movement ceases and the eccentric moves' the piston downward, forcing th-e oil within theV cylinderV above the upper end of the fixed piston or abutment 16 outwardly and into pipe 13. Continued rotation of the eccentric first rotates the cylinder clockwise, to bring the ports intoV the position shown inV Fig. 3, and finally toV the position in Figs. 1 and 2, whereupon the upstroke, above described, again takes place to draw in a measured charge of oil.

The amount of oil drawn iin-and conscquently the capacity of the pump, can be determined and varied by changing the bore of the cylinder 4:, and making the fixed piston larger or smaller, as the case may be, to fit the same.

Such ychange in the pump capacity does not, however, change the degree of lap between the ports, and consequently the pump remains tight, this being due to the fact that the external dimensions of the cylinder-is not diminished.

Under the construction above described, the piston 1.6, by reason of the wayv it is mounted, will center itself in the bore of the cylinder without difliculty.

What is claimed is: Y -V 1. In a force feed lubricator the combination of a pump casting Vhaving oppositely disposed inlet andV exhaust'ports `opening into a cylindrical bore formed in said casting; a cylinder mounted for endwise movement and oscillation about its axis in said bore, said cylinder having laterally extending inlet and exhaust portspassing through the wallthereof and opening into the space within said cylinder, said ports standing at an angle ,toV each other; stationary means cooperating with the lower portion of the cylinder to force an in-drawn charge of oil upwardly therein and out through the exhaust ports; and means serving to reciprocate the cylinder and to oscillate the same about its 2. In a for/ce fced'lubricator the combination of a pump casting having oppositely disposed inlet and exhaust ports opening into a cylindricalbore formed in said casting; a cylinder mounted for endwiseV movement and oscillation about its axis in said bore, said cylinder having laterally extending in- Vletl and exhaustports passing through the wall thereof and opening into the space within said cylindrical bore, said ports standing at an angle to each other; a fixed abutment cooperating with the lower portion of the cylinder bore to force an indrawn charge of oil upwardly therein and out through the exhaust ports; and means serving to reciprocate the cylinder and to oscillate the same about its axis.

3. In a force feed lubricator the combination of a pump casting having oppositely disposed inlet and exhaust ports opening intoa cylindrical bore formed in said casting; a cylinder mounted for endwise movement and oscillation about its axis in said bore, said cylinder having laterally extending inlet and exhaust ports passing through the wall thereof and opening into the space within said cylinder, said ports standing at an angle to each other; a fixed piston mounted in the lower Vportion of the casting and extending upwardly into the bore of the cylinder; and means serving to reciprocate the cylinder and to oscillate the same about its axis.

` 4. In a force feed lubricator the combination of a pump casting having oppositely disposed inlet and exhaust ports opening into a cylindrical bore formed in said casting; a cylinder mounted for endwise movement and oscillation about its axis in said bore, said cylinder having laterally extending inlet and exhaust ports passing through the wall thereof and opening intoV the space within said cylinder, said ports standing at an angle to each other; a xed piston extending-into the lower end of said cylinder; a

mounting engaging the lower end of said piston, said mounting being secured within the lower end of the cylindrical bore formed in the casting; and means serving to reciprocate the cylinder and to oscillate the same about its axis.

5. In a force feed lubricator the combination of a pump'- casting having oppositely disposed inlet and exhaust ports opening into a cylindrical bore formed in said casting; a cylinder mounted for endwise movement and oscillation about its axis in said bore, said cylinder having laterally extending inlet and exhaust ports passing through the wall thereof and opening into the spa'ee fi within said cylinder, said ports standing at an angle to each other; a plug screw threaded into the lower portion of the cylindrical bore aforesaid, said plug being interiorly threaded; a piston having an enlarged lower end, the upper end of the piston passing into 10 name to this specification.

WILFRED GEORGE GOLES. 

